Posted: Sep 21, 2014 2:31 pm
By understanding what a marvel of engineering a bird is. By looking at how all the components and systems that constitute a bird have developed in coordination to produce a heavier than air flying creature. It is no more than a fairy tale to belief that some animal flapping its limbs about resulted in the production of a primary flight feather while at the same time the bones, the respiratory apparatus, the muscalature and other features all happened to develop in just the right way to achieve lift off.
There is no evidence that unguided mutations could produce any of this.